NumberResearchThousands-blocks in 717-635
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 717-635 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 717 blocks
Most active assignees, all time — NPA 717
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2006-09-12 | 717-635-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HARISBGZN1 | PA |
| 2006-07-12 | 717-635-1XXX | 1000–1999 | Assigned | D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE | 6846 | HARISBGZN1 | PA |
| — | 717-635-2XXX | 2000–2999 | Reserved | WINDSTREAM D & E SYSTEMS, INC. - PA | 4114 | HARISBGZN1 | PA |
| 2007-09-28 | 717-635-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | HARISBGZN1 | PA |
| 2009-03-11 | 717-635-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | HARISBGZN1 | PA |
| 2007-03-13 | 717-635-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HARISBGZN1 | PA |
| 2009-11-27 | 717-635-6XXX | 6000–6999 | Assigned | WINDSTREAM D & E SYSTEMS, INC. - PA | 4114 | HARISBGZN1 | PA |
| 2004-01-30 | 717-635-7XXX | 7000–7999 | Assigned | WINDSTREAM D & E SYSTEMS, INC. - PA | 4114 | HARISBGZN1 | PA |
| 2007-05-08 | 717-635-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | HARISBGZN1 | PA |
| 2007-05-08 | 717-635-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | HARISBGZN1 | PA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.